Re: Re: change value of session variable?

On Thu, 22 Jul 2004 00:48:16 -0400, Five <primeooze@hotmail.com> wrote: > > "Chris Shiflett" <shiflett@php.net> wrote in message > news:20040722030944.41256.qmail@web52801.mail.yahoo.com... > > --- Five <primeooze@hotmail.com> wrote: > > > My problem isn't the logic of when and where to output variable > > > values. It's figuring out when a session variable will accept > > > initialization and what enables and/or prevents it from doing so. > > > > There's no magic. Session variables behave exactly like any other > > variable. If you output a session variable before initializing it, you > > will see nothing (and a notice is generated, depending on your > > error_reporting setting). > > > > The only difference, in terms of using session variables, is that they > > persist from page to page. > > > ---------------------------------------------------- > page1.php > <?php > session_start(); > echo 'page #1<br>'; > > echo $_SESSION['favcolor']; > $_SESSION['favcolor'] = 'green'; > > echo '<br><a href="page2.php">page 2</a>'; > ?> > > ---------------------------------------------------- > page2.php > <?php > session_start(); > echo 'page #2<br>'; > > echo $_SESSION['favcolor']; > $_SESSION['favcolor'] = 'blue'; > > echo '<br><a href="page1.php">page 1</a>'; > ?> > ---------------------------------------------------- > > When I tested the above example, no matter how many times I clicked back and forth between the > two pages, the session variable would > not accept assignment of values 'blue' or 'green', while there should be no > value on the first look at page1 but should have echoed > 'green' on the first visit to page2 as that was the value it was assigned on page1. > When I changed the initialization and assignment of the session variable to before attempting > to echo it's value, it then worked. > That started me thinking that placement of the initialization/assignment might make a > difference on whether a session variable would > accept assignment of a value. An ordinary variable would have accepted assignment of a value > after an attempt to echo it's value. > It's still an ordinary variable. Sounds like an old bug in PHP. What version are you using? I promise that I am doing things just like that, only with no output at all of the session var, and it works fine. -- DB_DataObject_FormBuilder - The database at your fingertips http://pear.php.net/package/DB_DataObject_FormBuilder paperCrane --Justin Patrin--